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Getting the first character of a string with $str[0]
I want to get the first letter of a string and I've noticed that $str[0] works great. I am just not sure whether this is 'good practice', as that notation is generally used with arrays. This feature doesn't seem to be very well documented so I'm turning to you guys to tell me if it's all right –...
Difference between a user and a schema in Oracle?
...nts, etc etc etc.
SYSTEM is a schema.....
Technically -- A schema is the set of metadata (data dictionary) used by the database,
typically generated using DDL. A schema defines attributes of the database, such as
tables, columns, and properties. A database schema is a description of the data i...
PHP + MySQL transactions examples
...l, let's begin a transaction
$db->beginTransaction();
// A set of queries; if one fails, an exception should be thrown
$db->query('first query');
$db->query('second query');
$db->query('third query');
// If we arrive here, it means that no exception was ...
When is it appropriate to use C# partial classes?
I was wondering if someone could give me an overview of why I would use them and what advantage I would gain in the process.
...
Padding within inputs breaks width 100%
Ok, so we know that setting padding to an object causes its width to change even if it is set explicitly. While one can argue the logic behind this, it causes some problems with some elements.
...
Object.watch() for all browsers?
...c example:
var targetObj = {};
var targetProxy = new Proxy(targetObj, {
set: function (target, key, value) {
console.log(`${key} set to ${value}`);
target[key] = value;
}
});
targetProxy.hello_world = "test"; // console: 'hello_world set to test'
If you need to observe changes ma...
HTTP headers in Websockets client API
...et from the server and then passes this ticket during WebSocket connection setup either in the URL/query string, in the protocol field, or required as the first message after the connection is established. The server then only allows the connection to continue if the ticket is valid (exists, has not...
LinearLayout not expanding inside a ScrollView
... wrong with my code. For what this paramater? When you would ever like to set it false?
– MyWay
Sep 15 '15 at 20:40
@...
Difference between HBase and Hadoop/HDFS
...vides low latency access to small amounts of data from within a large data set.
Provides flexible data model.
Hadoop is most suited for offline batch-processing kinda stuff while HBase is used when you have real-time needs.
An analogous comparison would be between MySQL and Ext4.
...
Background image jumps when address bar hides iOS/Android/Mobile Chrome
...divs since they are 100% height and "fixed". Since the background image is set to "cover" it will adjust the image size/position as the containing area is larger.
Based on the responsive nature of the site, the background must scale. I entertain two possible solutions:
1) Set the #bg1, #bg2 height...